Genghis Kawaii
Gone Fishin'
It can be World War 1 or World War 2, and it doesn't matter which side Sweden joins, just that they get wrapped into it. POD is anything after 1900, and the war can be something that looks very different than OTL.
World war 1 russia almost end attacked the swedenish navy and in world war sweden could be attacked by germany or join Finland in the winter war